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US-2024420523-A1 · Dec 19, 2024 · US
Method for operating a tachograph and tachograph
US8931091B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8931091-B2 |
| Application number | US-201013504848-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 18, 2010 |
| Priority date | Oct 30, 2009 |
| Publication date | Jan 6, 2015 |
| Grant date | Jan 6, 2015 |
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- Title
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Abstract
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A method for operating a tachograph having an application controller and a safety controller. A memory is associated with the application controller and a further memory is associated with the safety controller. An encrypted program code having at least one associated signature is made available to the safety controller. The encrypted program code is decrypted by means of the security controller and verified by the at least one signature. It is detected whether the decrypted program code (EPC) is intended for the application controller and/or for the security controller. Depending on what is detected, the program in the memory and/or the further program in the further memory is at least partially replaced by the decrypted program code and, depending on a result of the verification, the at least partially replaced program and/or the at least partially replaced further program is released for executing.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for operating a tachograph having an application controller and a security controller, wherein the application controller has an associated memory that stores a program executed by the application controller, and the security controller has an associated further memory that stores a further program executed by the security controller, wherein the application controller is connected to the security controller, the method comprising: providing a…
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Classifications
Physics · mapped topic
Physics · mapped topic
- G07C5/085Primary
Physics · mapped topic
Physics · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8931091B2 cover?
- A method for operating a tachograph having an application controller and a safety controller. A memory is associated with the application controller and a further memory is associated with the safety controller. An encrypted program code having at least one associated signature is made available to the safety controller. The encrypted program code is decrypted by means of the security controlle…
- Who is the assignee on this patent?
- Hoffmann Klaus, Lindinger Andreas, Continental Automotive Gmbh
- What technology area does this patent fall under?
- Primary CPC classification G07C5/085. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 06 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).